French manufacturer talks tanks with President Roosevelt. Washington, D.C., June 11. Louis Renault, prominent French auto manufacturer, leaving the White House today after a conference with President Roosevelt on war material production. Renault said he was interested chiefly in mass production of tanks, and his discussion with Mr. Roosevelt was a prelude to conferences during the next few days with leading American industrialists. His interpreter said he would probably see William S. Knudsen and Henry Ford